body, html
  font-weight 200px
  background-color
  font-family 'PingFang SC','STHertiSC-Light','HelveTica-Light', Arial, sans-serif

.clearfix
  display inline-block
  &:after
    display block
    content "."
    height 0
    line-height 0
    clear both
    visibility hidden

// 根据dpr设置border的大小
@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5) 
  .border-1px
    &::after
      -webkit-transform: scaleY(.7)
      transform: scaleY(.7)

@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2)
  .border-1px
    &::after
      -webkit-transform: scaleY(.5)
      transform: scaleY(.5)